Finding the Third Proportional to 85,903 and 174,222

Step by Step Solution

1. Step 1: Write the proportion equation
   85,903 : 174,222 = 174,222 : x
2. Step 2: Convert to fraction form
   85,903/174,222 = 174,222/x
3. Step 3: Cross multiply
   85,903x = 174,222 × 174,222
4. Step 4: Simplify right side
   85,903x = 30,353,305,284
5. Step 5: Solve for x
   x = 30,353,305,284/85,903
6. Step 6: Final answer
   x = 353,343.95